<form action="" method="POST">
    {{ form.suggest }}
    {% for err in form.suggest.errors %}
        <p style="color:red;padding-left:12px">{{ err }}</p>
    {% endfor %}
    <br>
    <p>
        <div onclick="reset1()" class="reset"></div>
    </p>
    {{ form.csrf_token }}
    {{ form.submit }}
</form>
<script>
    function reset1(){
        $("#suggest").val("");
    }
</script>